code: def test_redis_queue_read_timeout(redis_mock):
      redis_mock.return_value.blpop.return_value = (
          b"READINESS_QUEUE",
          pickle.dumps("test_entry"),
      )
      redis_queue = QueuingSystem.REDIS.get_readiness_queue()
  
      # default timeout
      assert redis_queue.get(timeout=0) == "test_entry"
      assert redis_mock.return_value.blpop.call_args_list[
          0
      ] == mock.call(["READINESS_QUEUE"], timeout=0.005)
  
      # custom timeout
      assert redis_queue.get(timeout=2) == "test_entry"
      assert redis_mock.return_value.blpop.call_args_list[
          1
      ] == mock.call(["READINESS_QUEUE"], timeout=2)
  
      # blocking timeout
      assert redis_queue.get() == "test_entry"
      assert redis_mock.return_value.blpop.call_args_list[
          2
      ] == mock.call(["READINESS_QUEUE"], timeout=0)
  
imports: import base64
  import multiprocessing
  import pickle
  import queue
  import time
  from unittest import mock
  import pytest
  import requests_mock
  from lightning.app import LightningFlow
  from lightning.app.core import queues
  from lightning.app.core.constants import HTTP_QUEUE_URL, STATE_UPDATE_TIMEOUT
  from lightning.app.core.queues import READINESS_QUEUE_CONSTANT, BaseQueue, HTTPQueue, QueuingSystem, RateLimitedQueue, RedisQueue
  from lightning.app.utilities.imports import _is_redis_available
  from lightning.app.utilities.redis import check_if_redis_running
label_desc: Use image node_id 6 for calling a global function with example usage: test_redis_queue_read_timeout(redis_mock) without return types